Tissue remodeling

组织重塑
  • 文章类型: Journal Article
    目的:研究唇侧倾斜的种植体轴是否会影响上颌骨前部即刻种植体置入和修复(IIPP)的临床结果。
    方法:纳入上颌中切牙或上颌外侧切牙不可挽救的患者。在所有参与者中进行IIPP同时进行结缔组织移植(CTG)。在对照组中,牙槽的长轴与牙齿对齐,这确保了立即植入的目标是切牙边缘或未来修复的扣带。测试组的脊和牙齿的轴之间具有较大的角度。为了避免骨开窗,植入物倾斜放置在唇侧,并从未来修复的唇侧出现。进行口腔内扫描和锥形束计算机断层扫描,以记录基线和1年后的软组织和硬组织轮廓。软组织稳定性,骨重塑,评估并比较两组患者的粉红美学评分(PES)。
    结果:39名参与者(19个测试和20个对照)完成了研究。手术后1年,面部中部牙龈缘迁移为0.85±0.37mm(测试)和0.81±0.33mm(对照),没有显著差异。口腔轮廓改变没有发现差异,线性脊减少,颊骨厚度,或PES分数。试验组比对照组显示出较薄的口腔软组织。
    结论:当出现较大的牙脊角度时,唇侧倾斜的植入物,在IIPP中使用CTG避免颊脊开窗,短期内不会影响临床结局。
    OBJECTIVE: To investigate whether a labially inclined implant axis compromises the clinical outcomes of immediate implant placement and provisionalization (IIPP) in the anterior maxilla.
    METHODS: Patients with unsalvageable central or lateral maxillary incisors were enrolled. IIPP with simultaneous connective tissue graft (CTG) was performed in all participants. In the control group, the alveolar ridge had a long axis aligned with the tooth, which ensured that the immediate implant was aimed at the incisor edge or the cingulum of future restoration. The test group had a large angle between the axes of the ridge and tooth. To avoid bone fenestration, the implants were placed labially inclined and emerged from the labial side of future restoration. Intra-oral scanning and cone-beam computed tomography were performed to record soft and hard tissue profiles at baseline and 1 year later. Soft tissue stability, bone remodeling, and pink esthetic score (PES) were evaluated and compared between two groups.
    RESULTS: Thirty-nine participants (19 tests and 20 controls) completed the study. At 1-year post-surgery, the mid-facial gingival margin migrations were 0.85 ± 0.37 mm (test) and 0.81 ± 0.33 mm (control), without significant differences. No differences were identified in buccal profile alteration, linear ridge reduction, buccal bone thickness, or PES scores. The test group demonstrated thinner buccal soft tissue at the crestal level than the control group.
    CONCLUSIONS: When large tooth-ridge angulation presented, labially inclined implant, avoiding buccal ridge fenestration in IIPP with CTG, did not compromise the clinical outcome in short term.
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  • 文章类型: Journal Article
    背景:微聚焦超声程序的有限安全性减轻了出色的功效。
    目的:我们试图评估一种新型微聚焦超声的安全性和紧缩效果。
    方法:使用以下传感器对参与者的随机中下面部和下面部进行治疗:M4.5,D4.5,M3.0和D3.0。改进预处理和后处理照片的成对比较,三维(3D)体积评估,通过B超测量皮肤厚度,和皮肤光老化参数进行了评估。记录不良事件和患者满意度。
    结果:共纳入20名参与者(20名女性)。在3个月的随访中,20名参与者中有14名(70%)被认为表现出临床上明显的面部收紧(P<0.05)。下表面的平均体积变化,3个月后定量评估为-0.29mL,而对照组为+0.42mL(P<0.05)。在没有任何口服或肌内麻醉的情况下,VAS疼痛评分为3.00±1.19。
    结论:样本量小,缺乏临床量表,和非个性化治疗参数。新型微聚焦超声似乎是下面部收紧的安全有效方式。
    背景:ChiCTR2200064666。
    BACKGROUND: The excellent efficacy is mitigated by the limited safety profile of microfocused ultrasound procedures.
    OBJECTIVE: We sought to assess the safety and tightening efficacy of a novel microfocused ultrasound.
    METHODS: The randomized middle and lower face and submental region of the participants were treated with the novel device using the following transducers: M4.5, D4.5, M3.0, and D3.0. Improvement in paired comparison of pretreatment and posttreatment photographs, three-dimensional (3D) volumetric assessments, skin thickness measured by B-ultrasonography, and skin photoaging parameters were evaluated. Adverse events and patient satisfaction were also recorded.
    RESULTS: A total of 20 participants (20 female) were enrolled. Fourteen of 20 participants (70%) were judged to show clinically significant facial tightening during 3-month follow-up (P < 0.05). The mean volumetric change in the lower face, as quantitatively assessed after 3 months was -0.29 mL compared with +0.42 mL on the control side (P < 0.05). The VAS pain score was 3.00 ± 1.19 without any oral or intramuscular anesthesia.
    CONCLUSIONS: A small sample size, lack of clinical scales, and impersonalized treatment parameters. The novel microfocused ultrasound appears to be a safe and effective modality for lower-face tightening.
    BACKGROUND: ChiCTR 2200064666.
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  • 文章类型: Journal Article
    In treatment-refractory cancers, tumor tissues damaged by therapy initiate the repair response; therefore, tumor tissues must be exposed to an additional burden before successful repair. We hypothesized that an agent recognizing a molecule that responds to anticancer treatment-induced tissue injury could deliver an additional antitumor agent including a radionuclide to damaged cancer tissues during repair. We selected the extracellular matrix glycoprotein tenascin-C (TNC) as such a molecule, and three antibodies recognizing human and murine TNC were employed to evaluate X-irradiation-induced changes in TNC uptake by subcutaneous tumors. TNC expression was assessed by immunohistochemical staining of BxPC-3 tumors treated with or without X-irradiation (30 Gy) for 7 days. Antibodies against TNC (3-6, 12-2-7, TDEAR) and a control antibody were radiolabeled with 111In and injected into nude mice having BxPC-3 tumors 7 days after X-irradiation, and temporal uptake was monitored for an additional 4 days by biodistribution and single-photon emission computed tomography with computed tomography (SPECT/CT) studies. Intratumoral distribution was analyzed by autoradiography. The immunohistochemical signal for TNC expression was faint in nontreated tumors but increased and expanded with time until day 7 after X-irradiation. Biodistribution studies revealed increased tumor uptake of all three 111In-labeled antibodies and the control antibody. However, a statistically significant increase in uptake was evident only for 111In-labeled 3-6 (35% injected dose (ID)/g for 30 Gy vs. 15% ID/g for 0 Gy at day 1, p < 0.01), whereas limited changes in 111In-labeled TDEAR2, 12-2-27, and control antibody were observed (several % ID/g for 0 and 30 Gy). Serial SPECT/CT imaging with 111In-labeled 3-6 or control antibody provided consistent results. Autoradiography revealed noticeably stronger signals in irradiated tumors injected with 111In-labeled 3-6 compared with each of the nonirradiated tumors and the control antibody. The signals were observed in TNC-expressing stroma. Markedly increased uptake of 111In-labeled 3-6 in irradiated tumors supports our concept that an agent, such as an antibody, that recognizes a molecule involved in tissue injury repair, such as TNC, could enhance drug delivery to tumor tissues that have undergone therapy. The combination of antibody 3-6 coupled to a tumoricidal drug and conventional therapy has the potential to achieve better outcomes for patients with refractory cancer.
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  • 文章类型: Journal Article
    This study was conducted to identify cytokine profiles associated with radiographic phenotypes of knee osteoarthritis (rKOA) with a focus on early stage of the disease.
    The pilot population study involved 60 middle-aged patients (mean age 50 ± 7.3y.). Standardized weight-bearing anteroposterior and axial radiographs were used to assess rKOA severity in tibiofemoral (TFJ) of patellofemoral joint (PFJ) by grading system (grades 0-3). Luminex (xMAP®) technology was used to simultaneously assess 60 biomarkers (BMs).
    Several pathways of angiogenic (CXCL10/IP-10, FGF1/2, PDGF-AA/BB, ANG1, RANTES), tissue remodeling/fibrosis (MMP1/3, TIMP2/3/4, TGFβ), and fat tissue (leptin) BMs associated with rKOA severity already in very early phase (grade 1). We identified several sets of cytokines as key markers of early knee osteoarthritis (KOA) predicting radiographic features in logistic-regression models (AUC = 0.80-0.97). Marked sex-specificity of rKOA course was detected: upregulation of angiogenesis dominated in females, whereas the activation of tissue remodeling was dominant in males. Several of these shifts, e.g., decrease of CXCL10/IP-10, took place only in grade 1 KOA and disappeared or reversed in later stages. OA of different knee-joint compartments has distinct profiles of cytokines. A broad list of BMs (TIMP2/3/4, MMP1/3, TGFβ1/2, vWF-A2, sE-selectin and leptin) associated with OA in the PFJ.
    Our results demonstrate that substantial and time-limited shifts in the angiogenic and TIMP/MMP systems occur in the early stage of KOA. Our study findings highlight the sex-, grade- and compartment-dependent shifts in above processes. The data may contribute to the individualized prevention of KOA in the future.
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  • 文章类型: Journal Article
    目的:阴道松弛综合征(VRS)是女性及其伴侣的生理和心理问题。最近,2940nmEr:YAG激光在VRS治疗中引起了人们的关注。本研究评估了这种非手术激光手术的临床疗效。
    方法:30例VRS或阴道萎缩的产后女性,33-56岁(平均41.7岁)随机分为两组,A组和B组均通过90°和360°扫描范围以2940nmEr:YAG治疗4次,间隔1〜2周。在A组中,前2个疗程以360°范围进行,最后2个疗程以90°范围进行多次微脉冲模式。每次发射1.7J,3多次拍摄,每个会话3次通过。B组在所有4个疗程(与A组相同的参数)中进行了90°范围的多次微脉冲模式治疗,然后在最后2个疗程中,在360°范围内进行了另外2次通过/会话。长脉冲模式,每次发射3.7J。在基线时和治疗后2个月时对阴道紧密度进行了测阴器评估。在基线和术后2个月采集组织学标本。评估了对阴道紧缩的主观满意度以及性满意度的改善。结果用配对的Student'st检验进行统计学显著性检验。
    结果:所有受试者均顺利完成研究,无不良事件。术后2个月,所有受试者的阴道壁松弛均有显著改善,对伴侣输入阴道紧缩(76.6%)和受试者自己评估的性满意度(70.0%)。组织学发现表明阴道壁具有更好的弹性,具有收紧和紧致。
    结论:Er:YAG激光治疗VRS的两种方案均能显著改善阴道松弛。通过扫描范围以多微脉冲模式进行多重拍摄,非手术Er:YAG激光治疗无痛,安全,副作用免费,易于耐受和有效。
    OBJECTIVE: Vaginal relaxation syndrome (VRS) is both a physical and psychological problem for women and often their partners. Recently the 2940 nm Er:YAG laser has attracted attention for VRS treatment. The current study evaluated the clinical efficacy of this nonsurgical laser procedure.
    METHODS: Thirty postpartum females with VRS or vaginal atrophy, ages from 33 - 56 yr (mean 41.7 yr) were divided randomly into two groups, Group A and Group B. Both groups were treated for 4 sessions at 1∼2-weekly intervals with a 2940 nm Er:YAG via 90° and 360° scanning scopes. In Group A the first 2 sessions were performed with the 360° scope and the final 2 with the 90° scope in multiple micropulse mode, 1.7 J delivered per shot, 3 multishots, 3 passes per session. Group B underwent multiple micropulse mode treatment with the 90° scope in all 4 sessions (same parameters as Group A) then during the final 2 sessions an additional 2 passes/session were delivered with the 360° scope, long-pulsed mode, 3.7 J delivered per shot. Perineometer assessments were performed at baseline and at 2 months post-treatment for vaginal tightness. Histological specimens were taken at baseline and at 2 months post-procedure. Subjective satisfaction with vaginal tightening was assessed together with improvement in sexual satisfaction. RESULTS were tested for statistical significance with the paired Student\'s t-test.
    RESULTS: All subjects successfully completed the study with no adverse events. Significant improvement in vaginal wall relaxation was seen in all subjects at 2 months post-procedure based on the perineometer values, on the partners\' input for vaginal tightening (76.6%) and for sexual satisfaction as assessed by the subjects themselves (70.0%). The histological findings suggested better elasticity of the vaginal wall with tightening and firming.
    CONCLUSIONS: Both regimens of Er:YAG laser treatment for VRS produced significant improvement in vaginal relaxation. With multishots delivered in the multiple micropulse mode via scanning scopes, nonsurgical Er:YAG laser treatment was pain-free, safe, side effect free, easily tolerated and effective.
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  • 文章类型: Clinical Trial
    BACKGROUND: Since the first studies by Apfelberg in 1994 and the mathematical model by Mordon in 2004, laser lipolysis (LAL) has been on the rise. Laser lipolysis has the advantages of reduced operator fatigue, excellent patient tolerance, quick recovery time, as well as the additional benefit of dermal tightening. This article reports our experience with laser-assisted lipolysis (LAL) in submental and neck remodelling.
    METHODS: Between June 2010 and January 2013, a prospective study was performed on 30 patients treated for Rohrich type I to III aging neck, with LAL. The laser used in this study was a 980 nm diode laser (Quanta system, spa model D-plus, Solbate Olona (VA), Italy). Laser energy was transmitted through a 600 μm optical fiber and delivered in a continuous mode 15 W power. Previous mathematical modelling suggested that 0.1 kJ was required in order to destroy 1 ml of fat. Patients were asked to fill out a satisfaction questionnaire. The cervicomental angle was measured 6 months post-operatively and compared with the preoperative values.
    RESULTS: Other than three patients who developed mild hyperpigmentation that disappeared after 4 months, there were no complications in the series. Pain during the anaesthesia and discomfort after the procedure were minimal. The time taken to return to normal activities was 3.2 ± 1 days. All patients would strongly recommend this treatment. Overall satisfaction was high with both patients and investigators and was validated by decrease in cervicomental angle demonstrating a systematic decrease in fat thickness and improved skin tightening.
    CONCLUSIONS: LAL is a safe and reproducible technique for remodeling in Rohrich type I to III aging neck. The procedure allows for a reduction in the amount of adipose deposits while providing concurrent skin contraction.
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